404143 has 4 divisors (see below), whose sum is σ = 405880. Its totient is φ = 402408.

The previous prime is 404123. The next prime is 404161. The reversal of 404143 is 341404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404143 is a prime.

It is a super-3 number, since 3×404143³ = 198027925353336621, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (101470).

2⁴⁰⁴¹⁴³ is an apocalyptic number.

404143 is a deficient number, since it is larger than the sum of its proper divisors (1737).

404143 is a wasteful number, since it uses less digits than its factorization.

404143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 404143 is about 635.7224237039. The cubic root of 404143 is about 73.9341391116.

Adding to 404143 its reverse (341404), we get a palindrome (745547).

The spelling of 404143 in words is "four hundred four thousand, one hundred forty-three", and thus it is an iban number.